ES2545359T3 - Locking Joint Mechanism - Google Patents
Locking Joint Mechanism Download PDFInfo
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- ES2545359T3 ES2545359T3 ES12153793.0T ES12153793T ES2545359T3 ES 2545359 T3 ES2545359 T3 ES 2545359T3 ES 12153793 T ES12153793 T ES 12153793T ES 2545359 T3 ES2545359 T3 ES 2545359T3
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- articulation
- cam
- main shaft
- locking
- handle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
- A61B2017/2912—Handles transmission of forces to actuating rod or piston
- A61B2017/2923—Toothed members, e.g. rack and pinion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2946—Locking means
Abstract
Una grapadora (10) quirúrgica que comprende: un conjunto (20) de empuñadura; un cuerpo (30) alargado que se extiende desde el conjunto (20) de empuñadura; un conjunto (102) de herramienta articulable montado en un extremo distal del cuerpo alargado; y un mecanismo de articulación conectado operativamente al conjunto de empuñadura y configurado para articular de manera selectiva y bloquear de manera segura el conjunto de herramienta en una o más posiciones, en el que el mecanismo de articulación tiene: un miembro (110) de eje principal montado para su rotación y conectado a un enlace de articulación; un retén (120) fijado de manera giratoria que tiene una abertura para recibir una parte (114) de eje del miembro de eje principal; caracterizado por un elemento de bloqueo de leva que tiene un orificio configurado para recibir la parte de eje del miembro eje principal, en el que el elemento de bloqueo de leva tiene superficies de bloqueo de leva y una pestaña de bloqueo; un miembro (135) de empuje dispuesto entre el retén y el elemento de bloqueo de leva; una cubierta (140) de bloqueo que define rebajes para recibir la pestaña de bloqueo, en el que los rebajes incluyen un rebaje central posicionado para corresponderse con una posición no articulada; una empuñadura (150) de articulación que tiene superficies de leva configuradas para acoplarse a las superficies de bloqueo de leva del elemento de bloqueo de leva, en el que el acoplamiento de las superficies de bloqueo de leva y las superficies de leva desacopla el elemento de bloqueo de leva contra el empuje del miembro de empuje, y en el que la empuñadura de articulación es giratoria desde una posición inicial a una segunda posición, después de lo cual en la segunda posición la palanca de articulación se acopla mecánicamente al eje principal, de manera que una rotación adicional de la empuñadura de articulación causa la rotación del eje principal.A surgical stapler (10) comprising: a handle assembly (20); an elongated body (30) extending from the handle assembly (20); a joint tool assembly (102) mounted on a distal end of the elongate body; and an articulation mechanism operatively connected to the handle assembly and configured to selectively articulate and securely lock the tool assembly in one or more positions, in which the articulation mechanism has: a main shaft member (110) mounted for rotation and connected to an articulation link; a rotatably fixed retainer (120) having an opening to receive an axis part (114) of the main shaft member; characterized by a cam locking element having a hole configured to receive the shaft part of the main shaft member, wherein the cam locking element has cam locking surfaces and a locking flange; a thrust member (135) disposed between the retainer and the cam locking element; a blocking cover (140) defining recesses to receive the blocking flange, in which the recesses include a central recess positioned to correspond with an un articulated position; an articulation handle (150) having cam surfaces configured to engage the cam locking surfaces of the cam locking element, in which the coupling of the cam locking surfaces and the cam surfaces disengages the element from cam lock against the thrust of the thrust member, and in which the articulation handle is rotatable from an initial position to a second position, after which in the second position the articulation lever is mechanically coupled to the main shaft, of such that an additional rotation of the articulation handle causes the rotation of the main shaft.
Description
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DESCRIPCIÓN DESCRIPTION
Mecanismo de articulación de bloqueo Locking Joint Mechanism
Antecedentes Background
Campo técnico Technical field
La presente descripción se refiere a instrumentos quirúrgicos que tienen una o más partes de articulación. Más particularmente, la presente descripción se refiere a un mecanismo para bloquear la parte de articulación del instrumento quirúrgico en una pluralidad de posiciones. The present description refers to surgical instruments that have one or more joint parts. More particularly, the present description relates to a mechanism for locking the articulation part of the surgical instrument in a plurality of positions.
Antecedentes de la técnica relacionada Background of the related technique
Se han modificado varios instrumentos para su uso en procedimientos cerrados, es decir, por vía laparoscópica, artroscópica, endoscópica. Típicamente, dichos instrumentos incluyen una parte de cuerpo alargado configurada para extenderse a través de una abertura en un paciente, es decir, a través de un puerto de acceso, y/o a través de un orificio natural, por ejemplo, el ano, la boca. Several instruments have been modified for use in closed procedures, that is, laparoscopic, arthroscopic, endoscopic. Typically, said instruments include an elongated body part configured to extend through an opening in a patient, that is, through an access port, and / or through a natural orifice, for example, the anus, the mouth .
Muchos de estos instrumentos adaptados para procedimientos cerrados incluyen un conjunto de herramienta articulable montado en un extremo distal de una parte de cuerpo alargado. El conjunto de herramienta es controlado de manera remota desde el conjunto empuñadura montado en el extremo proximal de la parte de cuerpo alargado. Un mecanismo de articulación montado en el conjunto empuñadura permite la articulación remota del conjunto de herramienta con relación a la parte de cuerpo alargado. Generalmente, el mecanismo de articulación incluye una palanca montada en el conjunto empuñadura que, cuando es girada, avanza o retrae un enlace de articulación. El enlace de articulación se extiende a través de la parte de cuerpo alargado y está conectado operativamente al conjunto de herramienta. El avance y la retracción longitudinales del enlace de articulación causan la articulación del conjunto de herramienta. El conjunto de herramienta se mantiene en una posición deseada únicamente mediante la fricción entre la palanca y la empuñadura. De esta manera, si un médico contactara accidentalmente con el conjunto de herramienta con una estructura dentro del cuerpo con suficiente fuerza, la fuerza podría causar que el conjunto de herramienta fuese desviado de la posición deseada. Many of these instruments adapted for closed procedures include an articulable tool assembly mounted at a distal end of an elongated body part. The tool assembly is controlled remotely from the handle assembly mounted on the proximal end of the elongated body part. An articulation mechanism mounted on the handle assembly allows remote articulation of the tool assembly relative to the elongated body part. Generally, the articulation mechanism includes a lever mounted on the handle assembly which, when rotated, advances or retracts an articulation link. The linkage link extends through the elongated body part and is operatively connected to the tool assembly. The longitudinal advance and retraction of the joint link cause the articulation of the tool assembly. The tool assembly is maintained in a desired position only by friction between the lever and the handle. In this way, if a doctor accidentally contacted the tool assembly with a structure inside the body with sufficient force, the force could cause the tool assembly to be deflected from the desired position.
Por lo tanto, sería beneficioso tener un mecanismo de articulación configurado para bloquear selectivamente el conjunto de herramienta en una o más posiciones. Therefore, it would be beneficial to have an articulation mechanism configured to selectively lock the tool assembly in one or more positions.
El documento US 5704534 describe una grapadora quirúrgica del tipo en el que se basa la cláusula precaracterizadora de la reivindicación principal. US 5704534 describes a surgical stapler of the type on which the pre-characterizing clause of the main claim is based.
El documento EP0807409 describe una grapadora quirúrgica con un mecanismo de transmisión de articulación con un mecanismo de trinquete. EP0807409 describes a surgical stapler with a joint transmission mechanism with a ratchet mechanism.
Sumario Summary
Por consiguiente, se proporciona un instrumento quirúrgico que incluye un mecanismo de desplazamiento de bloqueo. Accordingly, a surgical instrument is provided that includes a locking displacement mechanism.
Descripción de los dibujos Description of the drawings
Las realizaciones de un mecanismo de articulación de bloqueo se describen en la presente memoria con referencia a los dibujos, en los que: Embodiments of a locking articulation mechanism are described herein with reference to the drawings, in which:
La Fig. 1 es una vista en perspectiva de una grapadora quirúrgica que incluye un mecanismo de articulación de bloqueo según una realización de la presente descripción; Fig. 1 is a perspective view of a surgical stapler that includes a locking articulation mechanism according to an embodiment of the present description;
La Fig. 2 es una vista en perspectiva ampliada de la parte 2 de la Fig. 1; Fig. 2 is an enlarged perspective view of part 2 of Fig. 1;
La Fig. 3 es una vista en perspectiva en despiece ordenado del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 3 is an exploded perspective view of the locking articulation mechanism of Fig. 1;
La Fig. 4 es una vista lateral en sección transversal del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 4 is a cross-sectional side view of the locking articulation mechanism of Fig. 1;
La Fig. 5 es una vista en perspectiva de un eje principal del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 5 is a perspective view of a main axis of the locking articulation mechanism of Fig. 1;
La Fig. 6 es una vista en perspectiva de un elemento de bloqueo de leva del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 6 is a perspective view of a cam locking element of the locking articulation mechanism of Fig. 1;
La Fig. 7 es una vista en perspectiva de la superficie distal de una cubierta de bloqueo del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 7 is a perspective view of the distal surface of a locking cover of the locking articulation mechanism of Fig. 1;
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La Fig. 8 es una vista en perspectiva de la superficie distal de la palanca de articulación del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 8 is a perspective view of the distal surface of the articulation lever of the locking articulation mechanism of Fig. 1;
La Fig. 9 es una vista superior en sección transversal del mecanismo de articulación de bloqueo de la Fig. 1 tomada a lo largo de la línea 9-9 de la Fig. 4; Fig. 9 is a cross-sectional top view of the locking articulation mechanism of Fig. 1 taken along line 9-9 of Fig. 4;
La Fig. 10 es una vista inferior del mecanismo de articulación de bloqueo de la Fig. 1 tomada a lo largo de la línea 10-10 de la Fig. 4; Fig. 10 is a bottom view of the locking articulation mechanism of Fig. 1 taken along line 10-10 of Fig. 4;
La Fig. 11 es una vista en perspectiva de la cubierta de bloqueo de la Fig. 7 separada del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 11 is a perspective view of the locking cover of Fig. 7 separated from the locking articulation mechanism of Fig. 1;
La Fig. 12 es una vista en perspectiva de la palanca de articulación de la Fig. 8 separada del mecanismo de articulación de bloqueo de la Fig. 1; Fig. 12 is a perspective view of the articulation lever of Fig. 8 separated from the locking articulation mechanism of Fig. 1;
La Fig. 13 es una vista de extremo en sección transversal del mecanismo de articulación de bloqueo de la Fig. 1 tomada a lo largo de la línea 13-13 de la Fig. 4; Fig. 13 is a cross-sectional end view of the locking articulation mechanism of Fig. 1 taken along line 13-13 of Fig. 4;
La Fig. 14 es una vista de extremo en sección transversal del mecanismo de articulación de bloqueo de la Fig. 1 tomada a lo largo de la línea 14-14 de la Fig. 4; Fig. 14 is a cross-sectional end view of the locking articulation mechanism of Fig. 1 taken along line 14-14 of Fig. 4;
La Fig. 15 es una vista superior en sección transversal del mecanismo de articulación de bloqueo de la Fig. 1 tomada a lo largo de la línea 15-15 de la Fig. 14; Fig. 15 is a cross-sectional top view of the locking articulation mechanism of Fig. 1 taken along line 15-15 of Fig. 14;
La Fig. 16 es la vista superior en sección transversal de la Fig. 9, en la que la palanca de articulación está en una segunda posición; Fig. 16 is the top cross-sectional view of Fig. 9, in which the articulation lever is in a second position;
La Fig. 17 es la vista de extremo en sección transversal de la Fig. 13, en la que la palanca de articulación está en la segunda posición; Fig. 17 is the end view in cross section of Fig. 13, in which the articulation lever is in the second position;
La Fig. 18 es la vista de extremo en sección transversal de la Fig. 14, en la que la palanca de articulación está en la segunda posición; Fig. 18 is the end view in cross section of Fig. 14, in which the articulation lever is in the second position;
La Fig. 19 es la vista en sección transversal superior de las Figs. 9 y 16, en la que la palanca de articulación está en la tercera posición; Fig. 19 is the top cross-sectional view of Figs. 9 and 16, in which the articulation lever is in the third position;
La Fig. 20 es una vista inferior del mecanismo de articulación de bloqueo de la Fig. 1, en la que la palanca de articulación está en la tercera posición; Fig. 20 is a bottom view of the locking articulation mechanism of Fig. 1, in which the articulation lever is in the third position;
La Fig. 21 es la vista superior en sección transversal de la Fig. 15, en la que el mecanismo de articulación está en posición de bloqueo; y Fig. 21 is the top cross-sectional view of Fig. 15, in which the articulation mechanism is in the locked position; Y
La Fig. 22 es una vista lateral en sección transversal de la palanca de articulación de la Fig. 1 tomada a lo largo de las líneas 22-22 de la Fig. 21. Fig. 22 is a cross-sectional side view of the articulation lever of Fig. 1 taken along lines 22-22 of Fig. 21.
Descripción detallada Detailed description
Las realizaciones del mecanismo de articulación de bloqueo descrito actualmente se describirán ahora en detalle con referencia a los dibujos, en los que los números similares designan elementos idénticos o correspondientes en cada una de las diversas vistas. Como es común en la técnica, el término "proximal" se refiere a aquella parte o componente más próximo al usuario u operador, es decir, cirujano o médico, mientras que el término "distal" se refiere a aquella parte o componente más alejado del usuario. Aunque el mecanismo de articulación de la presente descripción se describirá en relación a un dispositivo grapadora quirúrgica, el mecanismo de articulación descrito actualmente puede ser modificado para su uso con otros dispositivos quirúrgicos. The embodiments of the locking articulation mechanism currently described will now be described in detail with reference to the drawings, in which similar numbers designate identical or corresponding elements in each of the various views. As is common in the art, the term "proximal" refers to that part or component closest to the user or operator, that is, surgeon or doctor, while the term "distal" refers to that part or component furthest from the Username. Although the articulation mechanism of the present description will be described in relation to a surgical stapling device, the articulation mechanism currently described can be modified for use with other surgical devices.
Las Figs. 1-22 ilustran una realización de un mecanismo de articulación de bloqueo según la presente descripción, mostrada en general como un mecanismo 100 de articulación de bloqueo. Tal como se muestra en la Fig. 1, y como se describirá más adelante, el mecanismo 100 de articulación de bloqueo está incorporado en una grapadora 10 quirúrgica. La grapadora 10 quirúrgica incluye un conjunto 20 de empuñadura, un cuerpo 30 alargado que se extiende desde el conjunto 20 de empuñadura y un conjunto 40 de herramienta montado en un extremo distal del cuerpo 30 alargado. La estructura y función de la grapadora 10 quirúrgica solo se describirán aquí en la medida necesaria para describir completamente el mecanismo 100 de articulación de bloqueo. Para una descripción más detallada de la estructura y la función de una grapadora quirúrgica similar a la grapadora 10 quirúrgica, por favor véase la patente US de titularidad común Nº 5.865.361 de Milliman et al. Figs. 1-22 illustrate an embodiment of a locking joint mechanism according to the present description, generally shown as a locking joint mechanism 100. As shown in Fig. 1, and as will be described later, the locking articulation mechanism 100 is incorporated in a surgical stapler 10. The surgical stapler 10 includes a handle assembly 20, an elongated body 30 extending from the handle assembly 20 and a tool assembly 40 mounted at a distal end of the elongated body 30. The structure and function of the surgical stapler 10 will only be described here to the extent necessary to fully describe the locking joint mechanism 100. For a more detailed description of the structure and function of a surgical stapler similar to surgical stapler 10, please see US Patent Common Ownership No. 5,865,361 to Milliman et al.
Con referencia ahora a las Figs. 1-3, el mecanismo 100 de articulación incluye una carcasa 102 de articulación que With reference now to Figs. 1-3, the articulation mechanism 100 includes an articulation housing 102 that
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tiene semi-carcasas o perillas 104, 106 superior e inferior. Las semi-carcasas 104, 106 superior e inferior están configuradas para ser recibidas alrededor de un extremo distal del conjunto 20 de empuñadura y un extremo proximal del cuerpo 30 alargado. La carcasa 102 de articulación está configurada para facilitar la rotación del cuerpo 30 alargado alrededor de un eje “x” longitudinal (Fig. 1). Cada una de las semi-carcasas 104, 106 superior e inferior incluye extremos 104a, 106a proximales con estrías configurados para su acoplamiento operativo por el usuario. La semi-carcasa 104 superior define una abertura 105 (Fig. 3) que se extiende a través de la misma. La semi-carcasa 104 superior define además una pluralidad de ranuras 107 que se extienden radialmente hacia fuera de la abertura 105. Tal como se muestra, la semi-carcasa 104 incluye cuatro (4) ranuras 107, sin embargo, la semi-carcasa 104 superior puede definir más o menos de cuatro ranuras 107. It has semi-carcasses or knobs 104, 106 top and bottom. The upper and lower half shells 104, 106 are configured to be received around a distal end of the handle assembly 20 and a proximal end of the elongate body 30. The articulation housing 102 is configured to facilitate rotation of the elongated body 30 about a longitudinal "x" axis (Fig. 1). Each of the upper and lower half shells 104, 106 includes proximal ends 104a, 106a with grooves configured for user-operative coupling. The upper half-shell 104 defines an opening 105 (Fig. 3) that extends therethrough. The upper half-shell 104 further defines a plurality of slots 107 extending radially outwardly of the opening 105. As shown, the half-shell 104 includes four (4) slots 107, however, the half-shell 104 upper can define more or less than four slots 107.
Con referencia ahora a las Figs. 3 y 4, el mecanismo 100 de articulación incluye además un miembro 110 de eje principal, un retén 120, un elemento 130 de bloqueo de leva, una cubierta 140 de bloqueo, una palanca 150 de articulación y un elemento 160 de acoplamiento acanalado. Tal como se ha descrito anteriormente, el término "proximal" se refiere a aquella parte o componente más próximo al usuario u operador. Debido a que el usuario asirá la palanca 150 de articulación del mecanismo 100 de articulación, tal como se muestra en las Figs. 3 y 4, se dirá que la palanca 150 de articulación está situada en un extremo proximal del mecanismo 100 de articulación de bloqueo, mientras que el elemento 160 de acoplamiento acanalado está situado en un extremo distal del mismo. With reference now to Figs. 3 and 4, the articulation mechanism 100 further includes a main shaft member 110, a retainer 120, a cam locking element 130, a locking cover 140, an articulation lever 150 and a grooved coupling element 160. As described above, the term "proximal" refers to that part or component closest to the user or operator. Because the user will grab the articulation lever 150 of the articulation mechanism 100, as shown in Figs. 3 and 4, it will be said that the articulation lever 150 is located at a proximal end of the locking articulation mechanism 100, while the corrugated coupling element 160 is located at a distal end thereof.
Todavía con referencia a las Figs. 3, 4 y 5, el miembro 110 de eje principal incluye una parte 112 base y una parte 114 de eje que se extiende desde la parte 112 base. La parte 112 base está configurada para ser recibida de manera giratoria dentro de la abertura 105 de la semi-carcasa 104 superior. La parte 112 base incluye una ranura 113a que se extiende radialmente hacia el exterior. La ranura 113a La tapa del sensor (parte con forma de barril) se desplaza axialmente y contiene una característica saliente que se acopla y desacopla con la ranura en la parte radial del eje principal. El propósito de la ranura 113a se describirá más adelante. La parte 112 base incluye además un miembro de leva. Más específicamente, hay formada una abertura 113b a través de la misma y está configurada para acoplarse con una parte 165a que se extiende proximalmente de un pasador 165 de leva (Fig. 3) (Tal como se describirá más detalladamente más adelante). La parte 114 de eje del miembro 110 de eje principal incluye un par de muescas 115a, 115b que se extienden longitudinalmente. Las muescas 115a, 115b forman rebajes opuestos sustancialmente con forma de U que se extienden a lo largo de la longitud de la parte 114 de eje. Aunque se muestran con el mismo perfil con forma de U, los rebajes 115a, 115b pueden incluir perfiles conformados de manera alternativa y/o los perfiles pueden tener diferentes formas. La parte 114 de eje incluye además una abertura 117 que se extiende radialmente a través de un extremo 114a proximal de la misma. Tal como se describirá más detalladamente más adelante, la abertura 117 está configurada para recibir un pasador 155 (Fig. 3) para asegurar la empuñadura o palanca 150 de articulación con el eje 110 principal. Still with reference to Figs. 3, 4 and 5, the main shaft member 110 includes a base part 112 and an axis part 114 extending from the base part 112. The base part 112 is configured to be rotatably received within the opening 105 of the upper half-shell 104. The base part 112 includes a groove 113a that extends radially outward. Slot 113a The sensor cover (barrel-shaped part) moves axially and contains a protruding feature that engages and disengages with the slot in the radial part of the main shaft. The purpose of slot 113a will be described later. The base part 112 further includes a cam member. More specifically, an opening 113b is formed therethrough and is configured to engage with a portion 165a extending proximally of a cam pin 165 (Fig. 3) (as will be described in more detail below). The shaft part 114 of the main shaft member 110 includes a pair of notches 115a, 115b extending longitudinally. The notches 115a, 115b form substantially U-shaped opposite recesses that extend along the length of the shaft part 114. Although they are shown with the same U-shaped profile, the recesses 115a, 115b may include alternately shaped profiles and / or the profiles may have different shapes. The shaft part 114 further includes an opening 117 that extends radially through a proximal end 114a thereof. As will be described in more detail below, the opening 117 is configured to receive a pin 155 (Fig. 3) to secure the articulation handle 150 with the main shaft 110.
Con referencia continuada a las Figs. 3 y 4, el retén 120 forma un disco 122 sustancialmente plano. El disco 122 incluye una pluralidad de pestañas 124 que se extienden radialmente hacia el exterior. Tal como se muestra, el disco 122 incluye cuatro (4) pestañas 124 que se corresponden en número y colocación con las ranuras 107 formadas alrededor de la abertura 105 en la semi-carcasa 104 superior. El número y la separación de las pestañas 124 pueden variar en función del número y la ubicación de las ranuras 107 formadas en la semi-carcasa 104 superior. Se contempla que el disco 122 pueda incluir menos pestañas 124 que ranuras 107. El retén 120 incluye además una abertura 123 que se extiende a través del centro del disco 122. La abertura 123 está dimensionada para recibir la parte 114 de eje del miembro 110 de eje principal. With continued reference to Figs. 3 and 4, retainer 120 forms a substantially flat disc 122. Disc 122 includes a plurality of tabs 124 that extend radially outward. As shown, the disc 122 includes four (4) tabs 124 that correspond in number and placement with the slots 107 formed around the opening 105 in the upper half-shell 104. The number and spacing of the tabs 124 may vary depending on the number and location of the slots 107 formed in the upper half-shell 104. It is contemplated that the disc 122 may include fewer tabs 124 than slots 107. The retainer 120 further includes an opening 123 that extends through the center of the disc 122. The opening 123 is sized to receive the shaft portion 114 of the member 110 of principal axis.
Con referencia ahora a las Figs. 3, 4 y 6, el elemento 130 de bloqueo de leva incluye un cuerpo 132 sustancialmente anular y una parte 134 de brida. El cuerpo 132 anular define un orificio 133 longitudinal que se extiende a través del mismo configurado para recibir la parte 114 de eje del miembro 110 de eje principal. El cuerpo 132 anular incluye un par de rebordes 132a, 132b que se extienden a lo largo de la longitud del orificio 133. Los rebordes 132a, 132b se corresponden con las muescas 115a, 115b formadas en la parte 114 de eje del eje 110 principal. Hay formado un miembro 136 de leva en la parte 134 de brida del elemento 130 de bloqueo de leva. El miembro 136 de leva está separado radialmente del cuerpo 132 anular y se extiende proximalmente desde la parte 134 de brida. El miembro de leva incluye superficies 136a, 136b de bloqueo de leva. Una pestaña 138 de bloqueo se extiende radialmente hacia fuera desde el miembro 136 de leva. La pestaña 138 de bloqueo incluye una superficie 138a proximal redondeada. La parte 134 de brida define un rebaje 137 (Fig. 4) en una superficie distal de la misma configurado para recibir un extremo 135a proximal de un miembro 135 de empuje. Tal como se describirá más detalladamente más adelante, el miembro 135 de empuje está configurado para ser recibido alrededor de la parte 114 de eje del eje 110 principal entre el retén 120 y el elemento 130 de bloqueo de leva. Tal como se muestra, el miembro 135 de empuje incluye un muelle ondulado, sin embargo, el miembro 135 de empuje puede incluir cualquier aparato capaz de empujar selectivamente el elemento 130 de bloqueo de leva lejos del retén 120. Los muelles ondulados incluyen un perfil bajo, minimizando de esta manera el espacio necesario entre el elemento 130 de bloqueo de leva y el retén 120 para recibir el miembro 135 de empuje. With reference now to Figs. 3, 4 and 6, the cam locking element 130 includes a substantially annular body 132 and a flange portion 134. The annular body 132 defines a longitudinal hole 133 that extends through it configured to receive the shaft portion 114 of the main shaft member 110. The annular body 132 includes a pair of flanges 132a, 132b that extend along the length of the hole 133. The flanges 132a, 132b correspond to the notches 115a, 115b formed in the shaft portion 114 of the main shaft 110. A cam member 136 is formed in the flange portion 134 of the cam locking element 130. The cam member 136 is radially separated from the annular body 132 and extends proximally from the flange portion 134. The cam member includes cam locking surfaces 136a, 136b. A locking tab 138 extends radially outwardly from cam member 136. The locking tab 138 includes a rounded proximal surface 138a. The flange portion 134 defines a recess 137 (Fig. 4) on a distal surface thereof configured to receive a proximal end 135a of a thrust member 135. As will be described in more detail below, the pushing member 135 is configured to be received around the shaft portion 114 of the main shaft 110 between the retainer 120 and the cam locking element 130. As shown, the pushing member 135 includes a corrugated spring, however, the pushing member 135 can include any apparatus capable of selectively pushing the cam locking element 130 away from the retainer 120. The corrugated springs include a low profile , thus minimizing the necessary space between the cam locking element 130 and the retainer 120 to receive the pushing member 135.
Con referencia ahora a las Figs. 3, 4 y 7, la cubierta 140 de bloqueo define un miembro 142 sustancialmente With reference now to Figs. 3, 4 and 7, the blocking cover 140 defines a member 142 substantially
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anular que tiene una superficie 142a proximal y una superficie 142b distal (Fig. 7). La superficie 142a proximal está configurada para acoplarse y estabilizar la empuñadura o la palanca 150 de articulación. Tal como se muestra, la superficie 142a proximal está inclinada, sin embargo, pueden emplearse otras configuraciones para estabilizar la palanca 150 de articulación. Una pluralidad de bridas 144 se extienden radialmente hacia fuera desde el miembro 142 anular para asegurar la cubierta 140 de bloqueo a la semi-carcasa 104 superior de la carcasa 102 de articulación. Pueden usarse otros procedimientos para fijar la cubierta, tales como soldadura ultrasónica, retenes, cierre de bayoneta, adhesivos, etc. Tal como se muestra, la cubierta 140 de bloqueo incluye cuatro (4) bridas 144 separadas uniformemente alrededor del miembro 142 anular. La cubierta 140 de bloqueo puede incluir más o menos de cuatro bridas 144 y las bridas 144 pueden estar separadas uniformemente o no alrededor del miembro 142 anular. Tal como se muestra, cada brida 144 define una abertura 144a configurada para recibir un tornillo u otro dispositivo de sujeción. De manera alternativa, las bridas 144 pueden incluir pestañas de bloqueo o si no pueden estar configuradas para acoplarse de manera segura a la semi-carcasa 104 superior de la carcasa 102 de articulación. annular having a proximal surface 142a and a distal surface 142b (Fig. 7). The proximal surface 142a is configured to engage and stabilize the handle or articulation lever 150. As shown, the proximal surface 142a is inclined, however, other configurations can be employed to stabilize the articulation lever 150. A plurality of flanges 144 extend radially outwardly from the annular member 142 to secure the locking cover 140 to the upper half-shell 104 of the articulation housing 102. Other procedures can be used to fix the cover, such as ultrasonic welding, seals, bayonet closure, adhesives, etc. As shown, the locking cover 140 includes four (4) flanges 144 uniformly spaced around the annular member 142. The blocking cover 140 may include more or less than four flanges 144 and the flanges 144 may be uniformly or not spaced about the annular member 142. As shown, each flange 144 defines an opening 144a configured to receive a screw or other clamping device. Alternatively, the flanges 144 may include locking tabs or if they cannot be configured to securely engage the upper half-shell 104 of the articulation housing 102.
Con referencia particular a la Fig. 7, el miembro 142 anular define un orificio 141 longitudinal que se extiende a través del mismo y un recorte 143 semicircular separado radialmente del orificio 141 longitudinal. Tal como se describirá más detalladamente más adelante, el recorte 143 está configurado para recibir de manera deslizante el miembro 136 de leva del elemento 130 de bloqueo de leva. La superficie 142b distal del miembro 142 anular incluye una pluralidad de rebajes 145a que se extienden radialmente hacia fuera desde el recorte 143 semicircular a lo largo de sus extremos primero y segundo. Hay formado un rebaje 145b central en el punto medio del recorte 143 semicircular. Cada uno de los rebajes 145a y 145b está configurado para recibir la pestaña 138 de bloqueo del elemento 130 de bloqueo de leva. Tal como se describirá más detalladamente más adelante, el rebaje 145b central corresponde a una posición en la que cuando la pestaña 138 de bloqueo es recibida en el mismo, el conjunto 40 de herramienta está en una posición no articulada. El rebaje 145b está definido por un par de separadores 147 que tienen superficies 147a biseladas. Los rebajes 145a están definidos por separadores 146 que tienen superficies 146a biseladas. Los separadores 146 pueden ser de tamaño similar, tal como se muestra, para proporcionar rebajes 145a de separación similar. De esta manera, el conjunto 40 de herramienta puede ser articulado en incrementos homogéneos. De manera alternativa, los separadores 146 pueden ser de tamaños diferentes, resultando de esta manera en una articulación incremental desigual del conjunto 40 de herramienta. Tal como se describirá más detalladamente más adelante, las superficies 146a, 147b biseladas de los separadores 146, 147, respectivamente, están configuradas para dirigir la pestaña 138 de bloqueo del elemento 130 de bloqueo de leva al interior de uno de los rebajes 145a, 145b. With particular reference to Fig. 7, the annular member 142 defines a longitudinal hole 141 extending therethrough and a semicircular cut 143 radially separated from the longitudinal hole 141. As will be described in more detail below, the cutout 143 is configured to slidably receive the cam member 136 of the cam lock element 130. The distal surface 142b of the annular member 142 includes a plurality of recesses 145a extending radially outward from the semicircular cutout 143 along its first and second ends. A central recess 145b is formed at the midpoint of the semicircular cut 143. Each of the recesses 145a and 145b is configured to receive the locking tab 138 of the cam locking element 130. As will be described in more detail below, the central recess 145b corresponds to a position in which when the locking flange 138 is received therein, the tool assembly 40 is in an unarticulated position. The recess 145b is defined by a pair of spacers 147 having beveled surfaces 147a. The recesses 145a are defined by spacers 146 having beveled surfaces 146a. The spacers 146 may be of similar size, as shown, to provide recesses 145a of similar separation. In this way, the tool assembly 40 can be articulated in homogeneous increments. Alternatively, the spacers 146 may be of different sizes, resulting in an uneven incremental joint of the tool assembly 40. As will be described in more detail below, the beveled surfaces 146a, 147b of the spacers 146, 147, respectively, are configured to direct the locking flange 138 of the cam locking element 130 into one of the recesses 145a, 145b .
Con referencia todavía a la Fig. 7, una extensión 148 semicircular se extiende distalmente desde el miembro 142 anular. Los extremos 148a, 148b primero y segundo de la extensión 148 están configurados para interactuar con el elemento 130 de bloqueo de leva para prevenir una sobre-rotación del mecanismo 100 de articulación. Una pluralidad de patas 149 se extienden distalmente desde la superficie 142b distal del miembro 142 anular. Las patas 149 se corresponden en número y ubicación con las ranuras 107 formadas alrededor de la abertura 105 en la semi-carcasa 104 superior (Fig. 3). Las patas 149 están configuradas para ser recibidas dentro de las ranuras 107 de la semi-carcasa 104 superior y acoplarse a las pestañas 124 del retén 120. With reference still to Fig. 7, a semicircular extension 148 extends distally from the annular member 142. The first and second ends 148a, 148b of extension 148 are configured to interact with cam locking element 130 to prevent over-rotation of articulation mechanism 100. A plurality of legs 149 extend distally from the distal surface 142b of the annular member 142. The legs 149 correspond in number and location with the slots 107 formed around the opening 105 in the upper half-shell 104 (Fig. 3). The legs 149 are configured to be received within the slots 107 of the upper semi-housing 104 and engage the flanges 124 of the retainer 120.
Con referencia ahora a las Figs. 3, 4, 8 y 9, la empuñadura o palanca 150 de articulación incluye una base 152 circular y una parte 154 de acoplamiento alargada. La palanca 150 de articulación define un rebaje 151 configurado para recibir un extremo 114a proximal de la parte 114 de eje del eje 110 principal y ser recibido alrededor del cuerpo 132 anular del elemento 130 de bloqueo de leva. La palanca 150 de articulación incluye además un miembro 156 de leva que se extiende distalmente desde el interior del rebaje 151. El miembro 156 de leva incluye superficies 156a, 156b de leva. Tal como se describirá más detalladamente más adelante, las superficies 156a, 156b de leva están configuradas para acoplarse a las superficies 136a, 136b de bloqueo de leva formadas en el miembro 136 de leva del elemento 130 de bloqueo de leva. Con referencia particular a la Fig. 9, la palanca 150 de articulación define además un par de recortes 157, 159 horizontales que se extienden radialmente hacia fuera desde el rebaje 151 a través de la parte 154 de acoplamiento alargada. Los recortes 157, 159 están posicionados para su alineación con la abertura 117 formada en el extremo 114a proximal de la parte 114 de eje del eje 110 principal. Tal como se describirá más detalladamente más adelante, los recortes 157, 159 están configurados para permitir la rotación parcial de la palanca 150 de articulación con relación al eje 110 principal antes del acoplamiento de la palanca 150 de articulación con el pasador 155 de bloqueo. With reference now to Figs. 3, 4, 8 and 9, the articulation handle 150 includes a circular base 152 and an elongate coupling part 154. The articulation lever 150 defines a recess 151 configured to receive a proximal end 114a of the shaft part 114 of the main shaft 110 and to be received around the annular body 132 of the cam locking element 130. The articulation lever 150 further includes a cam member 156 extending distally from inside the recess 151. The cam member 156 includes cam surfaces 156a, 156b. As will be described in more detail below, cam surfaces 156a, 156b are configured to engage cam locking surfaces 136a, 136b formed in cam member 136 of cam locking element 130. With particular reference to Fig. 9, the articulation lever 150 further defines a pair of horizontal cuts 157, 159 that extend radially outward from the recess 151 through the elongate coupling portion 154. The cuts 157, 159 are positioned for alignment with the opening 117 formed in the proximal end 114a of the shaft portion 114 of the main shaft 110. As will be described in more detail below, the cuts 157, 159 are configured to allow partial rotation of the articulation lever 150 relative to the main shaft 110 before the coupling of the articulation lever 150 with the locking pin 155.
Con referencia ahora a las Figs. 3 y 4, el elemento 160 de acoplamiento acanalado es un soporte sustancialmente con forma de L que tiene una parte 162 horizontal y una parte 164 vertical. Extendiéndose desde el miembro 164 vertical hay una brida 166. La brida 166 está configurada para acoplarse a un enlace de articulación (no mostrado), que, tal como se ha descrito anteriormente, está conectado operativamente al conjunto 40 de herramienta. El miembro 162 horizontal define una ranura 163 configurada para recibir una parte 165b que se extiende distalmente del pasador 165 de leva. With reference now to Figs. 3 and 4, the grooved coupling element 160 is a substantially L-shaped support having a horizontal part 162 and a vertical part 164. Extending from the vertical member 164 is a flange 166. The flange 166 is configured to engage an articulation link (not shown), which, as described above, is operatively connected to the tool assembly 40. Horizontal member 162 defines a groove 163 configured to receive a portion 165b that extends distally from cam pin 165.
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El mecanismo de articulación puede estar configurado para ser incluido en un instrumento quirúrgico, tal como una grapadora quirúrgica. El mecanismo de articulación puede interactuar con un mecanismo sensor de la grapadora quirúrgica. La grapadora quirúrgica incluye una estructura que se extiende a través del eje alargado de la grapadora. La estructura, que puede incluir un miembro tubular, es desplazada proximalmente tras el acoplamiento de una unidad de carga de grapado quirúrgico articulada con el eje alargado. Las unidades de carga no articuladas están configuradas para no desplazar el miembro tubular. Una tapa de sensor está dispuesta con el extremo proximal del miembro tubular de manera que sea desplazada junto con el miembro tubular. La tapa del sensor tiene un saliente que es recibido en la ranura 113a para prevenir el movimiento del eje 110 principal a menos que, y hasta que, la tapa del sensor es desplazada. De esta manera, el mecanismo de articulación no puede ser movido a menos que una unidad de carga articulada esté acoplada con el eje alargado de la grapadora quirúrgica. La ranura 113a es utilizada para bloquear el mecanismo de articulación cuando una unidad de carga no está cargada, para desbloquear el mecanismo de articulación cuando una unidad de carga articulada está cargada, y para bloquear el mecanismo de articulación cuando una unidad de carga no articulada está cargada. La patente US Nº The articulation mechanism may be configured to be included in a surgical instrument, such as a surgical stapler. The articulation mechanism can interact with a sensing mechanism of the surgical stapler. The surgical stapler includes a structure that extends through the elongated shaft of the stapler. The structure, which may include a tubular member, is displaced proximally after the coupling of an articulated surgical stapling unit with the elongated shaft. Non-articulated load units are configured not to displace the tubular member. A sensor cover is arranged with the proximal end of the tubular member so that it is displaced together with the tubular member. The sensor cover has a projection that is received in the slot 113a to prevent movement of the main shaft 110 unless, and until, the sensor cover is displaced. In this way, the articulation mechanism cannot be moved unless an articulated load unit is coupled with the elongated shaft of the surgical stapler. The slot 113a is used to block the articulation mechanism when a loading unit is not loaded, to unlock the articulation mechanism when an articulated loading unit is loaded, and to block the articulation mechanism when an unarticulated loading unit is loaded US Patent No.
5.865.361 de Milliman et al. describe un tubo sensor de un mecanismo sensor que interactúa con las unidades de carga articuladas. 5,865,361 of Milliman et al. describes a sensor tube of a sensor mechanism that interacts with articulated load units.
El conjunto de mecanismo 100 de articulación se describirá ahora con referencia a las Figs. 3-12. Con referencia inicialmente a las Figs. 1-3, antes de fijar las semi-carcasas 104, 106 superior e inferior al cuerpo 30 alargado de la grapadora 10 quirúrgica, el elemento 160 de acoplamiento acanalado es posicionado dentro del conjunto 20 de empuñadura. El elemento 160 de acoplamiento acanalado es posicionado de manera que la brida 166 formada en el miembro 164 vertical del elemento 160 de acoplamiento acanalado se acople a un enlace de articulación (no mostrado) que se extiende desde el interior del cuerpo 30 alargado. Tal como se ha descrito anteriormente, la traslación longitudinal del enlace de articulación causa la articulación del conjunto 40 de herramienta. A continuación, las semi-carcasas 104, 106 superior e inferior son encajadas entre sí alrededor de un extremo proximal del cuerpo 30 alargado y un extremo proximal del conjunto 20 de empuñadura. Las semi-carcasas 104, 106 superior e inferior pueden ser unidas con una conexión de ajuste a presión, elementos de sujeción mecánicos, unión, adhesivo o cualquier otro procedimiento adecuado. The joint mechanism assembly 100 will now be described with reference to Figs. 3-12. With reference initially to Figs. 1-3, before fixing the upper and lower half shells 104, 106 to the elongated body 30 of the surgical stapler 10, the grooved coupling element 160 is positioned within the handle assembly 20. The corrugated coupling element 160 is positioned such that the flange 166 formed in the vertical member 164 of the corrugated coupling element 160 is coupled to an articulation link (not shown) extending from the inside of the elongated body 30. As described above, the longitudinal translation of the joint link causes the articulation of the tool assembly 40. Next, the upper and lower half shells 104, 106 are fitted together around a proximal end of the elongate body 30 and a proximal end of the handle assembly 20. The upper and lower half shells 104, 106 can be joined with a pressure adjustment connection, mechanical fasteners, joint, adhesive or any other suitable procedure.
Con referencia ahora a las Figs. 3, 4 y 10, a continuación el pasador 165 de leva es asegurado a la parte 112 base del eje 110 principal. La parte 165a proximal del pasador 165 de leva es recibida a través de la abertura 113b en la parte 112 base. En una realización, una vez que la parte 165a proximal del pasador 165 de leva es recibida a través de la abertura113b, la parte 165a proximal es remachada para asegurar el pasador 165 de leva al eje 110 principal. De manera alternativa, pueden usarse elementos de sujeción mecánicos u otros procedimientos adecuados para asegurar el pasador 165 de leva al eje 110 principal. Una vez que el pasador 165 de leva está asegurado dentro de la abertura 112b en la parte 112 base, el eje 110 principal es posicionado dentro de la abertura 105 de la semi-carcasa 104 superior de manera que la parte 165b distal del pasador 165 de leva sea recibida dentro de la ranura 163 formada en el miembro 162 horizontal del elemento 160 de acoplamiento acanalado. With reference now to Figs. 3, 4 and 10, then the cam pin 165 is secured to the base part 112 of the main shaft 110. The proximal part 165a of the cam pin 165 is received through the opening 113b in the base part 112. In one embodiment, once the proximal portion 165a of the cam pin 165 is received through the opening113b, the proximal portion 165a is riveted to secure the cam pin 165 to the main shaft 110. Alternatively, mechanical fasteners or other suitable methods can be used to secure the cam pin 165 to the main shaft 110. Once the cam pin 165 is secured within the opening 112b in the base part 112, the main shaft 110 is positioned within the opening 105 of the upper half-shell 104 so that the distal part 165b of the pin 165 of cam is received within the groove 163 formed in the horizontal member 162 of the grooved coupling element 160.
Con referencia continuada a las Figs. 3 y 4, a continuación, el retén 120 es colocado sobre y alrededor de la parte 114 de eje del eje 110 principal y es posicionado de manera que las pestañas 124 que se extienden radialmente hacia fuera desde su disco 122 sean recibidas dentro de las ranuras 107 formadas alrededor de la abertura 105 de la semi-carcasa 104 superior. A continuación, el miembro 135 de empuje es recibido alrededor de la parte 114 de eje del eje 110 principal de manera que un extremo 135b distal del miembro 135 de empuje se acople al disco 122 del retén 120. A continuación, el elemento 130 de bloqueo de leva es recibido alrededor de la parte 114 de eje. Tal como se ha descrito anteriormente, el cuerpo 132 anular del elemento 130 de bloqueo de leva incluye un par de rebordes 132a, 132b opuestos que se extienden a lo largo de la longitud del orificio 133 longitudinal. Los rebordes 132a, 132b se corresponden con las muescas 115a, 115b formadas en la parte 114 de eje del eje 110 principal. El acoplamiento de los rebordes 132a, 132b del elemento 130 de bloqueo de leva con las muescas 115a, 115b respectivas del eje 110 principal asegura una alineación apropiada del elemento 130 de bloqueo de leva con el eje 110 principal y además enchaveta el elemento 130 de bloqueo de leva con el eje 110 principal. De esta manera, la rotación del eje 110 principal causa una rotación correspondiente del elemento 130 de bloqueo de leva. With continued reference to Figs. 3 and 4, then the retainer 120 is placed on and around the shaft part 114 of the main shaft 110 and is positioned so that the flanges 124 extending radially outward from its disk 122 are received within the grooves 107 formed around the opening 105 of the upper semi-housing 104. Next, the pushing member 135 is received around the shaft part 114 of the main shaft 110 so that a distal end 135b of the pushing member 135 engages the disk 122 of the retainer 120. Next, the locking element 130 Cam is received around shaft part 114. As described above, the annular body 132 of the cam locking element 130 includes a pair of opposite flanges 132a, 132b that extend along the length of the longitudinal hole 133. The flanges 132a, 132b correspond to the notches 115a, 115b formed in the shaft part 114 of the main shaft 110. The coupling of the flanges 132a, 132b of the cam locking element 130 with the respective notches 115a, 115b of the main shaft 110 ensures proper alignment of the cam locking element 130 with the main shaft 110 and further keyed the locking element 130 cam with main shaft 110. In this way, the rotation of the main shaft 110 causes a corresponding rotation of the cam locking element 130.
Con referencia ahora a las Figs. 3, 4 y 11, a continuación, la cubierta 140 de bloqueo es recibida alrededor de la parte 114 de eje del eje 110 principal y sobre el cuerpo 132 anular del elemento 130 de bloqueo de leva de manera que el miembro 136 de leva del elemento 130 de bloqueo de leva sea recibido a través del recorte 143 semicircular. Tal como se observa en la Fig. 11, tras el acoplamiento inicial de la cubierta 140 de bloqueo con el elemento 130 de bloqueo de leva, el miembro 135 de empuje empuja el elemento 130 de bloqueo de leva hacia la cubierta 140 de bloqueo de manera que la pestaña 138 de bloqueo del elemento 130 de bloqueo de leva sea recibida dentro del rebaje 145b formado entre los separadores 147. La cubierta 140 de bloqueo es asegurada a la semi-carcasa 104 superior, tal como se ha descrito anteriormente. With reference now to Figs. 3, 4 and 11, then, the locking cover 140 is received around the shaft part 114 of the main shaft 110 and on the annular body 132 of the cam locking element 130 so that the cam member 136 of the element 130 cam lock is received through the semicircular cut 143. As seen in Fig. 11, after initial coupling of the locking cover 140 with the cam locking element 130, the pushing member 135 pushes the cam locking element 130 towards the locking cover 140 so that the locking tab 138 of the cam locking element 130 is received within the recess 145b formed between the spacers 147. The locking cover 140 is secured to the upper half-shell 104, as described above.
Con referencia a las Figs. 3, 4, 9 y 12, a continuación, la palanca 150 de articulación es colocada en el extremo With reference to Figs. 3, 4, 9 and 12, then the articulation lever 150 is placed at the end
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114a proximal del eje 114 de manera que el miembro 156 de leva formado en la base 152 de la palanca 150 de articulación se acople con el miembro 136 de leva del elemento 130 de bloqueo de leva y la abertura 117 formada en el extremo 114a proximal del eje 114 se alinee con los recortes 157, 159 horizontales formados en la parte 154 de acoplamiento de la palanca 150 de articulación. A continuación, el pasador 155 de bloqueo es insertado a través de la abertura 117 formada en la parte 114 de eje del eje 110 principal para asegurar la empuñadura o palanca de articulación 150 al eje 110 principal. Tal como se observa en la Fig. 9, el pasador 155 de bloqueo está configurado para extenderse completamente a través de la parte 114 de eje del eje 110 principal y al interior de cada uno de los recortes 157, 159 horizontales. El pasador 155 de bloqueo puede ser asegurado dentro de la abertura 117 mediante un ajuste por fricción, adhesivo u otro procedimiento adecuado. 114a proximal of the shaft 114 so that the cam member 156 formed in the base 152 of the articulation lever 150 engages with the cam member 136 of the cam locking element 130 and the opening 117 formed in the proximal end 114a of the shaft 114 aligns with the horizontal cuts 157, 159 formed in the coupling part 154 of the articulation lever 150. Next, the locking pin 155 is inserted through the opening 117 formed in the shaft portion 114 of the main shaft 110 to secure the handle or articulation lever 150 to the main shaft 110. As seen in Fig. 9, the locking pin 155 is configured to extend completely through the shaft portion 114 of the main shaft 110 and into each of the horizontal cuts 157, 159. The locking pin 155 can be secured within the opening 117 by a friction adjustment, adhesive or other suitable procedure.
El uso del mecanismo 100 de articulación se describirá ahora con referencia a las Figuras. Con referencia inicialmente a las Figs. 1, 4, 9 y 13-15, el mecanismo 100 de articulación se muestra en una posición inicial. Cuando el mecanismo 100 de articulación está en la posición inicial, el cuerpo 30 alargado y el conjunto 40 de herramienta de la grapadora 10 quirúrgica están en una configuración no articulada o recta. Con referencia particular a la Fig. 13, en la posición inicial, las superficies 136a, 136b de leva formadas en el miembro 136 de leva del elemento 130 de bloqueo de leva están alineadas con las superficies 156a, 156b de leva formadas en el miembro 156 de leva de la palanca 150 de articulación. El miembro 135 de empuje empuja las superficies 136a, 136b de leva del elemento 130 de bloqueo de leva a un acoplamiento con las superficies 156a, 156b de leva de la palanca 150 de articulación. Este acoplamiento proporciona un bloqueo positivo que no depende de la fricción. Con particular referencia ahora a las Figs. 14 y 15, en la posición inicial, la pestaña 138 de bloqueo formada en la brida 134 del elemento 130 de bloqueo de leva es recibida dentro de los rebajes 145b formados entre los separadores 147 de la cubierta 140 de bloqueo. Las superficies 146 biseladas en los separadores que definen el rebaje 145b central son biseles relativamente grandes que tienden a devolver el mecanismo a la posición no articulada, mientras que los biseles relativamente más pequeños en los otros separadores bloquean el mecanismo de articulación en posiciones articuladas. Estos biseles pueden estar configurados para minimizar el par necesario para moverse entre las posiciones articuladas. Con referencia brevemente a la Fig. 9, en la posición inicial, el pasador 155 de bloqueo está centrado dentro de los recortes 157, 159 horizontales formados en la parte 154 de acoplamiento de la palanca 150 de articulación. The use of the articulation mechanism 100 will now be described with reference to the Figures. With reference initially to Figs. 1, 4, 9 and 13-15, the articulation mechanism 100 is shown in an initial position. When the articulation mechanism 100 is in the initial position, the elongated body 30 and the tool assembly 40 of the surgical stapler 10 are in a non-articulated or straight configuration. With particular reference to Fig. 13, in the initial position, the cam surfaces 136a, 136b formed in the cam member 136 of the cam locking element 130 are aligned with the cam surfaces 156a, 156b formed in the member 156 cam lever 150 articulation. The pushing member 135 pushes the cam surfaces 136a, 136b of the cam locking element 130 to a coupling with the cam surfaces 156a, 156b of the articulation lever 150. This coupling provides a positive block that does not depend on friction. With particular reference now to Figs. 14 and 15, in the initial position, the locking flange 138 formed in the flange 134 of the cam locking element 130 is received within the recesses 145b formed between the spacers 147 of the locking cover 140. The beveled surfaces 146 in the separators defining the central recess 145b are relatively large bevels that tend to return the mechanism to the non-articulated position, while the relatively smaller bevels in the other separators block the articulation mechanism in articulated positions. These bezels can be configured to minimize the torque needed to move between articulated positions. With brief reference to Fig. 9, in the initial position, the locking pin 155 is centered within the horizontal cutouts 157, 159 formed in the coupling part 154 of the articulation lever 150.
Con referencia ahora a las Figs. 16-18, durante el uso, la palanca 150 de articulación es girada en un primer sentido anti-horario, tal como se indica mediante la flecha "A". Aunque la descripción siguiente se refiere a hacer girar la palanca 150 de articulación en un primer sentido anti-horario para causar la articulación del conjunto 40 de herramienta en una primera dirección, la palanca 150 de articulación puede ser girada también en un segundo sentido horario para causar la articulación del conjunto 40 de herramienta en una segunda dirección. Tal como se observa en la Fig. 16, la configuración de los recortes 157, 159 horizontales formados en la parte 154 de acoplamiento permite que la palanca 150 de articulación sea girada con relación a la parte 114 de eje del eje 110 principal desde la posición inicial (Fig. 9) a una segunda posición (Fig. 16) sin causar la rotación del eje 110 principal. Volviendo a la Fig. 17, la rotación de la palanca 150 de articulación desde la posición inicial a la segunda posición gira la palanca 150 de articulación con relación al elemento 130 de bloqueo de leva. La rotación de la palanca 150 de articulación con relación al elemento 130 de bloqueo de leva causa el movimiento del miembro 156 de leva de la palanca 150 de articulación con relación al miembro 136 de leva del miembro 130 de bloqueo. Tal como se observa en la Fig. 17, la rotación de la palanca 150 de articulación en un primer sentido, causa el acoplamiento de las superficies 156b de leva del elemento 156 de leva con la superficie 136b de leva. El acoplamiento de la superficie 156b de leva con la superficie 136b de leva fuerza el elemento 130 de bloqueo de leva distalmente lejos de la palanca 150 de articulación, tal como se indica mediante la flecha "B". El movimiento del elemento 130 de bloqueo de leva resulta en la compresión del miembro 135 de empuje. Con referencia a la Fig. 18, el movimiento distal del elemento 130 de bloqueo de leva causa además el desacoplamiento de la pestaña 138 de bloqueo desde el interior del rebaje 145b de la cubierta 140 de bloqueo. With reference now to Figs. 16-18, during use, the articulation lever 150 is rotated in a first anti-clockwise direction, as indicated by the arrow "A". Although the following description refers to rotating the articulation lever 150 in a first anti-clockwise direction to cause the articulation of the tool assembly 40 in a first direction, the articulation lever 150 can also be rotated in a second clockwise direction to cause the articulation of the tool assembly 40 in a second direction. As seen in Fig. 16, the configuration of the horizontal cutouts 157, 159 formed in the coupling part 154 allows the articulation lever 150 to be rotated relative to the axis part 114 of the main shaft 110 from the position initial (Fig. 9) to a second position (Fig. 16) without causing rotation of the main shaft 110. Returning to Fig. 17, the rotation of the articulation lever 150 from the initial position to the second position rotates the articulation lever 150 in relation to the cam locking element 130. The rotation of the articulation lever 150 in relation to the cam locking element 130 causes the movement of the cam member 156 of the articulation lever 150 in relation to the cam member 136 of the blocking member 130. As seen in Fig. 17, the rotation of the articulation lever 150 in a first direction causes the cam surfaces 156b of the cam element 156 to engage the cam surface 136b. The coupling of the cam surface 156b with the cam surface 136b forces the cam locking element 130 distally away from the articulation lever 150, as indicated by the arrow "B". The movement of the cam locking element 130 results in the compression of the thrust member 135. With reference to Fig. 18, the distal movement of the cam locking element 130 further causes the uncoupling of the locking flange 138 from inside the recess 145b of the locking cover 140.
Con referencia ahora a las Figs. 19-22, el acoplamiento del pasador 155 de bloqueo con la parte 154 de acoplamiento de la palanca 150 de articulación enchaveta el eje 110 principal con la palanca 150 de articulación, resultando de esta manera en cualquier rotación adicional de la palanca 150 de articulación causando la rotación del eje 110 principal. De esta manera, la rotación continuada de la palanca 150 de articulación en el primer sentido, tal como indica la flecha "A", causa la rotación del eje 110 principal en el mismo primer sentido, tal como se indica mediante la flecha "C" (Fig. 20). La rotación del eje 110 principal causa el movimiento del miembro 165 de leva que causa la traslación longitudinal del elemento 160 de acoplamiento acanalado, tal como se indica mediante la flecha "D". Tal como se ha descrito anteriormente, el elemento 160 de acoplamiento acanalado está conectado operativamente a un enlace de articulación (no mostrado). La traslación del elemento 160 de acoplamiento acanalado causa la traslación del enlace de la articulación que causa la articulación del conjunto 40 de herramienta (Fig. 1) con relación al cuerpo 30 alargado. With reference now to Figs. 19-22, the coupling of the locking pin 155 with the coupling part 154 of the articulation lever 150 key the main shaft 110 with the articulation lever 150, thus resulting in any further rotation of the articulation lever 150 causing the rotation of the main shaft 110. Thus, the continuous rotation of the articulation lever 150 in the first direction, as indicated by the arrow "A", causes the rotation of the main shaft 110 in the same first direction, as indicated by the arrow "C" (Fig. 20). The rotation of the main shaft 110 causes the movement of the cam member 165 which causes the longitudinal translation of the grooved coupling element 160, as indicated by the arrow "D". As described above, the grooved coupling element 160 is operatively connected to an articulation link (not shown). The translation of the grooved coupling element 160 causes the translation of the joint link that causes the articulation of the tool assembly 40 (Fig. 1) relative to the elongated body 30.
La palanca 150 de articulación puede ser girada en el primer sentido "A" hasta que la pestaña 138 de bloqueo del elemento 130 de bloqueo de leva se acopla con la superficie 148b de extremo (Fig. 11) de la extensión 148 The articulation lever 150 can be turned in the first direction "A" until the locking tab 138 of the cam locking element 130 engages with the end surface 148b (Fig. 11) of the extension 148
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semicircular de la cubierta 140 de bloqueo. Una vez que la palanca 150 de articulación ha sido girada suficientemente para articular el conjunto 40 de herramienta (Fig. 1) a una posición deseada, se libera la fuerza aplicada a la palanca 150 de articulación para causar la rotación de la palanca 150 de articulación y el eje 110 principal. Cuando se libera la fuerza aplicada a la palanca 150 de articulación, se libera también la fuerza que 5 comprime el miembro 135 de empuje. La fuerza de empuje del miembro 135 de empuje contra el elemento 130 de bloqueo de leva fuerza el elemento 130 de bloqueo de leva proximalmente hacia la palanca 150 de articulación, tal como indica la flecha "E" (Fig. 22). El movimiento del elemento 130 de bloqueo de leva hacia la palanca 150 de articulación causa la rotación de la palanca 150 de articulación en un segundo sentido, tal como se indica mediante la flecha "F", conforme las superficies 136a, 156a, 136b, 156b de leva de los miembros 136, 156 de leva, 10 respectivamente se vuelven a acoplar. El movimiento proximal del elemento 130 de bloqueo de leva con relación a la palanca 150 de articulación causa además que la pestaña 138 de bloqueo del elemento 130 de bloqueo de leva sea recibida dentro de uno de los rebajes 145a de la cubierta 140 de bloqueo. La superficie 138a redondeada de la pestaña 138 de bloqueo y las superficies 146a biseladas de los separadores 146 facilitan la recepción de la pestaña 138 de bloqueo dentro de uno de los rebajes 145a. Las superficies 146a biseladas proporcionan también semicircular of the locking cover 140. Once the articulation lever 150 has been rotated sufficiently to articulate the tool assembly 40 (Fig. 1) to a desired position, the force applied to the articulation lever 150 is released to cause rotation of the articulation lever 150 and the main shaft 110. When the force applied to the articulation lever 150 is released, the force that compresses the thrust member 135 is also released. The pushing force of the pushing member 135 against the cam locking element 130 forces the cam locking element 130 proximally towards the articulation lever 150, as indicated by the arrow "E" (Fig. 22). The movement of the cam locking element 130 towards the articulation lever 150 causes the rotation of the articulation lever 150 in a second direction, as indicated by the arrow "F", according to surfaces 136a, 156a, 136b, 156b cam members 136, 156 cam, 10 respectively are reattached. The proximal movement of the cam locking element 130 relative to the articulation lever 150 further causes the locking flange 138 of the cam locking element 130 to be received within one of the recesses 145a of the locking cover 140. The rounded surface 138a of the locking flange 138 and the beveled surfaces 146a of the spacers 146 facilitate the reception of the locking flange 138 within one of the recesses 145a. Beveled surfaces 146a also provide
15 una retroalimentación táctil "que genera un clic". 15 a tactile feedback "that generates a click".
Una vez que la pestaña 138 de bloqueo es recibida dentro de uno de los rebajes 145a, el conjunto 40 de herramienta está bloqueando una posición articulada y la grapadora 10 quirúrgica está lista para su uso. Tras el uso de la grapadora 10 quirúrgica, el mecanismo 100 de articulación de bloqueo puede ser usado para articular el conjunto 40 de herramienta a otra posición articulada, en la manera descrita anteriormente, o el mecanismo 100 de Once the locking tab 138 is received within one of the recesses 145a, the tool assembly 40 is blocking an articulated position and the surgical stapler 10 is ready for use. After the use of the surgical stapler 10, the locking articulation mechanism 100 can be used to articulate the tool assembly 40 to another articulated position, in the manner described above, or the mechanism 100 of
20 articulación de bloqueo puede ser usado para devolver el conjunto 40 de herramienta a la posición no articulada (Fig. 1). Locking joint 20 can be used to return tool assembly 40 to the non-articulated position (Fig. 1).
Se entenderá que pueden hacerse diversas modificaciones a la realización descrita en la presente memoria. Por ejemplo, tal como se ha indicado anteriormente, el mecanismo de bloqueo de articulación descrito puede ser modificado para proporcionar grados incrementales de articulación. Los grados de articulación pueden ser variados It will be understood that various modifications can be made to the embodiment described herein. For example, as indicated above, the articulation locking mechanism described can be modified to provide incremental degrees of articulation. The degrees of articulation can be varied
25 dependiendo de procedimiento que está siendo realizado. Por lo tanto, la descripción anterior no debería ser interpretada como limitativa, sino meramente como ejemplos de realizaciones particulares. Las personas con conocimientos en la materia idearán otras modificaciones dentro del alcance de las reivindicaciones adjuntas. 25 depending on the procedure being performed. Therefore, the above description should not be construed as limiting, but merely as examples of particular embodiments. People with knowledge in the field will devise other modifications within the scope of the appended claims.
Claims (8)
- 2. 2.
- Grapadora quirúrgica según la reivindicación 1, en la que los rebajes están definidos por separadores (146) que tiene superficies (146a) biseladas. Surgical stapler according to claim 1, wherein the recesses are defined by spacers (146) having beveled surfaces (146a).
- 3.3.
- Grapadora quirúrgica según la reivindicación 2, en la que los separadores difieren en tamaño. Surgical stapler according to claim 2, wherein the spacers differ in size.
- 4. Four.
- Grapadora quirúrgica según la reivindicación 2 o la reivindicación 3, en la que los separadores incluyen separadores centrales que definen un rebaje central y otros separadores que definen rebajes para las posiciones articuladas. Surgical stapler according to claim 2 or claim 3, wherein the separators include central separators defining a central recess and other separators defining recesses for the articulated positions.
- 5. 5.
- Grapadora quirúrgica según la reivindicación 4, en la que los biseles en los separadores centrales son relativamente grandes, y en la que los biseles en los separadores que definen rebajes para las posiciones articuladas son relativamente pequeños. Surgical stapler according to claim 4, wherein the bevels in the central separators are relatively large, and wherein the bevels in the separators defining recesses for the articulated positions are relatively small.
- 6. 6.
- Grapadora quirúrgica según cualquiera de las reivindicaciones anteriores, en la que la cubierta de bloqueo tiene una extensión semicircular que tiene extremos configurados para interactuar con el elemento de bloqueo de leva y prevenir una sobre-rotación. Surgical stapler according to any of the preceding claims, wherein the locking cover has a semicircular extension having ends configured to interact with the cam locking element and prevent over-rotation.
- 7. 7.
- Grapadora quirúrgica según cualquiera de las reivindicaciones anteriores, en la que la empuñadura de articulación tiene recortes (157, 159) que se alinean con una abertura (117) formada en la parte de eje, y que comprende además un pasador (155) de bloqueo para asegurar la empuñadura de articulación al eje principal, en la que los recortes permiten que la empuñadura de articulación pivote antes de girar el eje principal. Surgical stapler according to any of the preceding claims, wherein the articulation handle has cutouts (157, 159) that align with an opening (117) formed in the shaft part, and further comprising a locking pin (155) to secure the articulation handle to the main axis, in which the cuts allow the articulation handle to pivot before turning the main axis.
- 8. 8.
- Grapadora quirúrgica según cualquiera de las reivindicaciones anteriores, en la que hay un elemento de acoplamiento (160) fijado al miembro de eje principal y el enlace de articulación. Surgical stapler according to any of the preceding claims, wherein there is a coupling element (160) fixed to the main shaft member and the linkage link.
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US13/021,023 US8336754B2 (en) | 2011-02-04 | 2011-02-04 | Locking articulation mechanism for surgical stapler |
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-
2011
- 2011-02-04 US US13/021,023 patent/US8336754B2/en active Active
-
2012
- 2012-01-18 AU AU2012200298A patent/AU2012200298A1/en not_active Abandoned
- 2012-01-24 CA CA2764786A patent/CA2764786C/en active Active
- 2012-02-01 JP JP2012019528A patent/JP6144455B2/en active Active
- 2012-02-03 ES ES12153793.0T patent/ES2545359T3/en active Active
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- 2012-11-19 US US13/680,138 patent/US9204876B2/en active Active
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2015
- 2015-12-15 JP JP2015243725A patent/JP2016034590A/en not_active Withdrawn
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2017
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JP2016034590A (en) | 2016-03-17 |
US8336754B2 (en) | 2012-12-25 |
CA2764786C (en) | 2019-03-19 |
US9204876B2 (en) | 2015-12-08 |
JP2012161606A (en) | 2012-08-30 |
US20120199629A1 (en) | 2012-08-09 |
AU2012200298A1 (en) | 2012-08-23 |
EP2484290B1 (en) | 2015-07-29 |
JP2017104755A (en) | 2017-06-15 |
JP6144455B2 (en) | 2017-06-07 |
EP2484290A1 (en) | 2012-08-08 |
CA2764786A1 (en) | 2012-08-04 |
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